/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 洪汤泽大帅哥
 * Date: 2024-10-10
 * Time: 14:39
 */
//计算1/1-1/2+1/3-1/4+1/5 …… + 1/99 - 1/100 的值    。
public class TestDemo {
    public static void main(String[] args) {
        double sum = 0;
        int flag = 1;
        for (int i = 1; i <= 100; i++) {
            sum += flag * (1.0 / i);
            flag *= (-1);
        }
        System.out.println(sum);
    }
}
